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Historical Maps for data.amsterdam.nl

Tools, scripts and data to generate tiles for data.amsterdam.nl from digitized historical maps from the Amsterdam City Archives.

Dienst der Publieke Werken (1943)

This repository contains:

  • JSON and GeoJSON data of map sheets, collected and georectified by Jan Hartmann
  • Scripts to download map sheets from the Amsterdam City Archives
  • GDAL scripts to warp these map sheets, combine them, and turn them into XYZ map tiles
  • A Leaflet-based viewer to view the historical maps produced by this repository

Usage

All steps required to turn the map series in the source-data directory into XYZ map tiles are defined by the Makefile.

First, make sure you have GDAL and Node.js installed, then install the dependencies:

npm install

The Makefile has the following targets/steps:

  • layers: combines georeference data from the source-data directory.
  • gdal-scripts: uses the newline-delimited JSON data in the layers directory to create GDAL scripts.
  • gdal: uses GDAL scripts from the gdal-scripts directory to download and warp map sheets.
  • tiles: uses gdal2tiles.py and the GeoTIFFs and VRTs in the output directory to create XYZ map tiles.

To exectute one of these steps, use make. For example:

make layers

See Also